Four-wheel drive, also called 4x4 or 4WD, refers to a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer case providing an additional output drive shaft and, in many instances, additional gear ranges.

Is all-wheel drive 4 wheel drive?

All-wheel drive is a type of four-wheel-drive system or mode that automatically shifts power between the front and rear wheels to maintain traction and is usually adequate for lighter-duty winter driving and light off-pavement use.

Do you really need 4WD?

Generally, 4WD and AWD are only necessary if you live in a climate where it snows and rains a lot. If you drive on dirt roads that are frequently muddy, they can provide more confidence when it matters most. ... In fact, 4WD and AWD can only take you so far if you don't have the right tires equipped.